The Organic Chemistry Tutor library
Worked examples across algebra, trigonometry, calculus, chemistry, physics, and test prep.
An AP Chemistry path covering atomic structure, bonding, mixtures, reactions, kinetics, thermochemistry, equilibrium, acids and bases, electrochemistry, and particle-level explanation.
An AP Chemistry path covering atomic structure, bonding, mixtures, reactions, kinetics, thermochemistry, equilibrium, acids and bases, electrochemistry, and particle-level explanation.
This track is organized as a mastery loop: source study, sequenced checks, Khan report evidence, then tutor handoff only when the data shows a real stuck point.
Use linked OER and companion sources before attempting checks.
Move through numbered PeerTutor problems without skipping failed gates.
Enter Khan report evidence and let the adaptive plan rank repair units.
Bring exact misses, notes, and one sharp question to a tutor.
The bank is intentionally mixed across facets and difficulty so high scores cannot come from one narrow question style.
Use these linked courses for video instruction and mastery practice, then return here for PeerTutor original checks and tutor help on the exact unit that got stuck.
External video content is linked or embedded through provider-hosted players, not copied. PeerTutor practice is original and cites each source path separately.
Watch the strongest public video path inside PeerTutor, then use the unit checks below to prove the student can actually do the work.
Worked examples across algebra, trigonometry, calculus, chemistry, physics, and test prep.
Use for AP-aligned science essentials across biology, chemistry, environmental science, and physics.
Concise science explainers for physics, chemistry, biology, astronomy, and earth science.
Khan Academy progress has to be entered from the student or tutor report. Khan does not provide a supported public progress API, so this mirror stores unit status locally and uses it to target PeerTutor checks.
Khan Academy does not provide a supported public progress API or external API keys. PeerTutor stores student-provided report evidence and maps it to original practice instead.
0 repair units and 5 practice units need attention before extension.
No Khan mirror data yet; this is a normal practice candidate, not a proven weakness.
Complete 12 sequenced checks and advance only after misses are corrected.
No Khan mirror data yet; this is a normal practice candidate, not a proven weakness.
Complete 12 sequenced checks and advance only after misses are corrected.
No Khan mirror data yet; this is a normal practice candidate, not a proven weakness.
Complete 12 sequenced checks and advance only after misses are corrected.
No Khan mirror data yet; this is a normal practice candidate, not a proven weakness.
Complete 12 sequenced checks and advance only after misses are corrected.
No Khan mirror data yet; this is a normal practice candidate, not a proven weakness.
Complete 12 sequenced checks and advance only after misses are corrected.
Rebuild the unit: do 12 PeerTutor checks, log every miss, then ask a tutor from the error log.
Khan evidence to mirror: percent/mastery for "Atomic structure and properties", missed skill, last activity date, and the next Khan item assigned by the teacher report.
Rebuild the unit: do 12 PeerTutor checks, log every miss, then ask a tutor from the error log.
Khan evidence to mirror: percent/mastery for "Compound structure and properties", missed skill, last activity date, and the next Khan item assigned by the teacher report.
Rebuild the unit: do 12 PeerTutor checks, log every miss, then ask a tutor from the error log.
Khan evidence to mirror: percent/mastery for "Properties of substances and mixtures", missed skill, last activity date, and the next Khan item assigned by the teacher report.
Rebuild the unit: do 12 PeerTutor checks, log every miss, then ask a tutor from the error log.
Khan evidence to mirror: percent/mastery for "Chemical reactions", missed skill, last activity date, and the next Khan item assigned by the teacher report.
Rebuild the unit: do 12 PeerTutor checks, log every miss, then ask a tutor from the error log.
Khan evidence to mirror: percent/mastery for "Kinetics", missed skill, last activity date, and the next Khan item assigned by the teacher report.
Rebuild the unit: do 12 PeerTutor checks, log every miss, then ask a tutor from the error log.
Khan evidence to mirror: percent/mastery for "Thermochemistry", missed skill, last activity date, and the next Khan item assigned by the teacher report.
Rebuild the unit: do 12 PeerTutor checks, log every miss, then ask a tutor from the error log.
Khan evidence to mirror: percent/mastery for "Equilibrium", missed skill, last activity date, and the next Khan item assigned by the teacher report.
Rebuild the unit: do 12 PeerTutor checks, log every miss, then ask a tutor from the error log.
Khan evidence to mirror: percent/mastery for "Acids and bases", missed skill, last activity date, and the next Khan item assigned by the teacher report.
Rebuild the unit: do 12 PeerTutor checks, log every miss, then ask a tutor from the error log.
Khan evidence to mirror: percent/mastery for "Thermodynamics and electrochemistry", missed skill, last activity date, and the next Khan item assigned by the teacher report.
Built for independent progress first, then tutor support where the student gets stuck.
Practice: Explain one periodic trend using evidence from atomic structure and a particle-level argument.
Start with AP Chemistry and AP/College Chemistry. Take notes until you can explain: Use moles, isotopes, mass spectrometry, electron configuration, and periodic trends.
Do the first sequenced checks until the definitions, vocabulary, and setup are correct without hints.
Produce the assignment artifact, then pass the application and analysis checks tied to: Explain one periodic trend using evidence from atomic structure and a particle-level argument.
Any miss becomes an error-log entry, a clean redo, and one nearby transfer problem before advancing.
Bring your attempted work, the exact missed check, and one question about: Explain trends with Coulombic attraction and shielding.
Move in order: foundation, transfer, analysis, timed readiness, then metacognitive repair.
Start the next sequenced check: #1 Data check. Do not jump ahead until this one is correct.
Weakest facet: Concept
During a Atomic structure and properties investigation, a measurement changes from 12 to 21. What is the change?
Which claim is strongest in a science explanation?
Which target best matches the AP Chemistry unit "Atomic structure and properties"?
Which practice artifact should you produce for "Atomic structure and properties" before asking a tutor for help?
Which target best proves readiness for "Atomic structure and properties"?
Which second target belongs to "Atomic structure and properties"?
Practice: Predict properties for two substances and justify each with bonding and intermolecular-force evidence.
Start with AP Chemistry and AP/College Chemistry. Take notes until you can explain: Compare ionic, covalent, metallic, and network structures.
Do the first sequenced checks until the definitions, vocabulary, and setup are correct without hints.
Produce the assignment artifact, then pass the application and analysis checks tied to: Predict properties for two substances and justify each with bonding and intermolecular-force evidence.
Any miss becomes an error-log entry, a clean redo, and one nearby transfer problem before advancing.
Bring your attempted work, the exact missed check, and one question about: Use Lewis structures, formal charge, resonance, VSEPR, polarity, and intermolecular forces.
Move in order: foundation, transfer, analysis, timed readiness, then metacognitive repair.
Start the next sequenced check: #1 Data check. Do not jump ahead until this one is correct.
Weakest facet: Concept
During a Compound structure and properties investigation, a measurement changes from 13 to 22. What is the change?
Which claim is strongest in a science explanation?
Which target best matches the AP Chemistry unit "Compound structure and properties"?
Which practice artifact should you produce for "Compound structure and properties" before asking a tutor for help?
Which target best proves readiness for "Compound structure and properties"?
Which second target belongs to "Compound structure and properties"?
Practice: Analyze a solution or gas data table with units, particle reasoning, and a model limitation.
Start with AP Chemistry and AP/College Chemistry. Take notes until you can explain: Use gases, solutions, concentration, spectroscopy, chromatography, and particulate models.
Do the first sequenced checks until the definitions, vocabulary, and setup are correct without hints.
Produce the assignment artifact, then pass the application and analysis checks tied to: Analyze a solution or gas data table with units, particle reasoning, and a model limitation.
Any miss becomes an error-log entry, a clean redo, and one nearby transfer problem before advancing.
Bring your attempted work, the exact missed check, and one question about: Connect observed properties to structure and interactions.
Move in order: foundation, transfer, analysis, timed readiness, then metacognitive repair.
Start the next sequenced check: #1 Data check. Do not jump ahead until this one is correct.
Weakest facet: Concept
During a Properties of substances and mixtures investigation, a measurement changes from 14 to 23. What is the change?
Which claim is strongest in a science explanation?
Which target best matches the AP Chemistry unit "Properties of substances and mixtures"?
Which practice artifact should you produce for "Properties of substances and mixtures" before asking a tutor for help?
Which target best proves readiness for "Properties of substances and mixtures"?
Which second target belongs to "Properties of substances and mixtures"?
Practice: Solve a limiting-reactant problem and explain the reaction evidence at the particle level.
Start with AP Chemistry and AP/College Chemistry. Take notes until you can explain: Balance reactions, classify reaction types, use net ionic equations, and solve stoichiometry problems.
Do the first sequenced checks until the definitions, vocabulary, and setup are correct without hints.
Produce the assignment artifact, then pass the application and analysis checks tied to: Solve a limiting-reactant problem and explain the reaction evidence at the particle level.
Any miss becomes an error-log entry, a clean redo, and one nearby transfer problem before advancing.
Bring your attempted work, the exact missed check, and one question about: Track limiting reactants and reaction evidence.
Move in order: foundation, transfer, analysis, timed readiness, then metacognitive repair.
Start the next sequenced check: #1 Data check. Do not jump ahead until this one is correct.
Weakest facet: Concept
During a Chemical reactions investigation, a measurement changes from 15 to 24. What is the change?
Which claim is strongest in a science explanation?
Which target best matches the AP Chemistry unit "Chemical reactions"?
Which practice artifact should you produce for "Chemical reactions" before asking a tutor for help?
Which target best proves readiness for "Chemical reactions"?
Which second target belongs to "Chemical reactions"?
Practice: Derive a rate law from initial-rate data and evaluate a proposed mechanism.
Start with AP Chemistry and AP/College Chemistry. Take notes until you can explain: Use rate laws, integrated rate laws, half-life, mechanisms, catalysts, and activation energy.
Do the first sequenced checks until the definitions, vocabulary, and setup are correct without hints.
Produce the assignment artifact, then pass the application and analysis checks tied to: Derive a rate law from initial-rate data and evaluate a proposed mechanism.
Any miss becomes an error-log entry, a clean redo, and one nearby transfer problem before advancing.
Bring your attempted work, the exact missed check, and one question about: Infer rates from controlled data.
Move in order: foundation, transfer, analysis, timed readiness, then metacognitive repair.
Start the next sequenced check: #1 Data check. Do not jump ahead until this one is correct.
Weakest facet: Concept
During a Kinetics investigation, a measurement changes from 16 to 25. What is the change?
Which claim is strongest in a science explanation?
Which target best matches the AP Chemistry unit "Kinetics"?
Which practice artifact should you produce for "Kinetics" before asking a tutor for help?
Which target best proves readiness for "Kinetics"?
Which second target belongs to "Kinetics"?
Practice: Calculate reaction enthalpy from two evidence types and reconcile any difference.
Start with AP Chemistry and AP/College Chemistry. Take notes until you can explain: Use calorimetry, enthalpy, Hess's law, bond energy, and energy diagrams.
Do the first sequenced checks until the definitions, vocabulary, and setup are correct without hints.
Produce the assignment artifact, then pass the application and analysis checks tied to: Calculate reaction enthalpy from two evidence types and reconcile any difference.
Any miss becomes an error-log entry, a clean redo, and one nearby transfer problem before advancing.
Bring your attempted work, the exact missed check, and one question about: Distinguish system, surroundings, heat, work, and temperature.
Move in order: foundation, transfer, analysis, timed readiness, then metacognitive repair.
Start the next sequenced check: #1 Data check. Do not jump ahead until this one is correct.
Weakest facet: Concept
During a Thermochemistry investigation, a measurement changes from 17 to 26. What is the change?
Which claim is strongest in a science explanation?
Which target best matches the AP Chemistry unit "Thermochemistry"?
Which practice artifact should you produce for "Thermochemistry" before asking a tutor for help?
Which target best proves readiness for "Thermochemistry"?
Which second target belongs to "Thermochemistry"?
Practice: Complete an equilibrium table and explain the direction of shift from Q versus K.
Start with AP Chemistry and AP/College Chemistry. Take notes until you can explain: Use K expressions, reaction quotients, ICE tables, solubility, and Le Chatelier reasoning.
Do the first sequenced checks until the definitions, vocabulary, and setup are correct without hints.
Produce the assignment artifact, then pass the application and analysis checks tied to: Complete an equilibrium table and explain the direction of shift from Q versus K.
Any miss becomes an error-log entry, a clean redo, and one nearby transfer problem before advancing.
Bring your attempted work, the exact missed check, and one question about: Connect equilibrium constants to particle populations.
Move in order: foundation, transfer, analysis, timed readiness, then metacognitive repair.
Start the next sequenced check: #1 Data check. Do not jump ahead until this one is correct.
Weakest facet: Concept
During a Equilibrium investigation, a measurement changes from 18 to 27. What is the change?
Which claim is strongest in a science explanation?
Which target best matches the AP Chemistry unit "Equilibrium"?
Which practice artifact should you produce for "Equilibrium" before asking a tutor for help?
Which target best proves readiness for "Equilibrium"?
Which second target belongs to "Equilibrium"?
Practice: Solve a buffer or titration problem with assumptions stated and checked.
Start with AP Chemistry and AP/College Chemistry. Take notes until you can explain: Use pH, pOH, Ka, Kb, buffers, titrations, indicators, and acid-base particle models.
Do the first sequenced checks until the definitions, vocabulary, and setup are correct without hints.
Produce the assignment artifact, then pass the application and analysis checks tied to: Solve a buffer or titration problem with assumptions stated and checked.
Any miss becomes an error-log entry, a clean redo, and one nearby transfer problem before advancing.
Bring your attempted work, the exact missed check, and one question about: Choose approximations and check whether they are valid.
Move in order: foundation, transfer, analysis, timed readiness, then metacognitive repair.
Start the next sequenced check: #1 Data check. Do not jump ahead until this one is correct.
Weakest facet: Concept
During a Acids and bases investigation, a measurement changes from 19 to 28. What is the change?
Which claim is strongest in a science explanation?
Which target best matches the AP Chemistry unit "Acids and bases"?
Which practice artifact should you produce for "Acids and bases" before asking a tutor for help?
Which target best proves readiness for "Acids and bases"?
Which second target belongs to "Acids and bases"?
Practice: Analyze a redox cell with half-reactions, cell potential, and thermodynamic interpretation.
Start with AP Chemistry and AP/College Chemistry. Take notes until you can explain: Use entropy, Gibbs free energy, cell potential, redox, galvanic cells, electrolytic cells, and Nernst-style reasoning.
Do the first sequenced checks until the definitions, vocabulary, and setup are correct without hints.
Produce the assignment artifact, then pass the application and analysis checks tied to: Analyze a redox cell with half-reactions, cell potential, and thermodynamic interpretation.
Any miss becomes an error-log entry, a clean redo, and one nearby transfer problem before advancing.
Bring your attempted work, the exact missed check, and one question about: Connect spontaneity, equilibrium, and electrical work.
Move in order: foundation, transfer, analysis, timed readiness, then metacognitive repair.
Start the next sequenced check: #1 Data check. Do not jump ahead until this one is correct.
Weakest facet: Concept
During a Thermodynamics and electrochemistry investigation, a measurement changes from 20 to 29. What is the change?
Which claim is strongest in a science explanation?
Which target best matches the AP Chemistry unit "Thermodynamics and electrochemistry"?
Which practice artifact should you produce for "Thermodynamics and electrochemistry" before asking a tutor for help?
Which target best proves readiness for "Thermodynamics and electrochemistry"?
Which second target belongs to "Thermodynamics and electrochemistry"?
These are source links, not scraped course copies. Licenses differ, so the label tells students how each source is used.
View the full citation indexOfficial AP Chemistry framework with nine commonly taught units and inquiry-based science practices.
Free AP-modeled practice path; link-out only.
General chemistry textbook for a full high school honors, AP-modeled, or college sequence.
AP-aligned science video essentials for biology, chemistry, environmental science, and physics.
Science explainers across chemistry, physics, biology, astronomy, and related college-bridge topics.
Useful worked-example videos; not open-source, so it is linked rather than republished.